September weather forecast and climate
Samão, Portugal

Weather in September

September, the first month of the autumn, in Samão, is also a moderately hot month, with average temperature ranging between min 12.5°C (54.5°F) and max 25.4°C (77.7°F).

Temperature

In Samão, Portugal, the average high-temperature is almost the same as in August - a still warm 25.4°C (77.7°F). In Samão, the average low-temperature is 12.5°C (54.5°F).

Humidity

In Samão, the average relative humidity is 64%.

Rainfall

In Samão, during 5.7 rainfall days, 23mm (0.91") of precipitation is typically accumulated. Throughout the year, in Samão, there are 132.3 rainfall days, and 791mm (31.14") of precipitation is accumulated.

Snowfall

April through October and December are months without snowfall.

Daylight

In Samão, the average length of the day is 12.5h.

Sunshine

The average sunshine in Samão is 9h.

UV index

In September, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to the UV radiation for average individuals.
Note: The average daily UV index of 5 in September transform into the following instructions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in September in Samão?

The average high-temperature, in September, in Samão, is 25.4°C (77.7°F), while the average low-temperature is 12.5°C (54.5°F).

What is the average humidity in September in Samão?

In September, the average relative humidity in Samão is 64%.

How many days does it rain in September in Samão?

In Samão, in September, during 5.7 rainfall days, 23mm (0.91") of precipitation is typically accumulated.

When it does not snow in Samão?

April through October and December are months without snowfall.

What is the average length of the day in September in Samão?

In Samão, the average length of the day in September is 12.5h.

How long on average sun shines in September in Samão?

In Samão, the average sunshine in September is 9h.

What is the UV index reading in September in Samão?

In September, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from the exposure to the Sun's UV rays.

Average temperature in September
Samão, Portugal

Average temperature in September - Samão, Portugal
  • Average high temperature in September: 25.4°C

The warmest months (with the highest average high temperature) are July and August (27.8°C).
The month with the lowest average high temperature is January (10.8°C).

  • Average low temperature in September: 12.5°C

The month with the highest average low temperature is July (13.7°C).
The coldest month (with the lowest average low temperature) is February (3.5°C).

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Average pressure in September
Samão, Portugal

Average pressure in September - Samão, Portugal
  • Average pressure in September: 1017.5mbar

The month with the highest atmospheric pressure is December (1022.6mbar).
The month with the lowest atmospheric pressure is April (1015.3mbar).

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Average wind speed in September
Samão, Portugal

Average wind speed in September - Samão, Portugal
  • Average wind speed in September: 6.4km/h

The windiest month (with the highest average wind speed) is March (8km/h).
The calmest month (with the lowest average wind speed) is September (6.4km/h).

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Average humidity in September
Samão, Portugal

Average humidity in September - Samão, Portugal
  • Average humidity in September: 64%

The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is August (62%).

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Average rainfall in September
Samão, Portugal

Average rainfall in September - Samão, Portugal
  • Average rainfall in September: 23mm

The wettest month (with the highest rainfall) is December (135mm).
The driest month (with the least rainfall) is July (7mm).

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Average rainfall days in September
Samão, Portugal

Average rainfall days in September - Samão, Portugal
  • Average rainfall days in September: 5.7 days

The month with the highest number of rainy days is January (16.2 days).
The month with the least rainy days is August (3.2 days).

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Average snowfall in September
Samão, Portugal

Average snowfall in September - Samão, Portugal
  • Average snowfall in September: 0mm

The month with the highest snowfall is January (5mm).
Months with the least snowfall are April, May, June, July, August, September, October and December (0mm).

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Average snowfall days in September
Samão, Portugal

Average snowfall days in September - Samão, Portugal
  • Average snowfall days in September: 0 days

Months with the highest number of snowfall days are January and February (0.3 days).
Months with the least snowfall days are April, May, June, July, August, September, October and December (0 days).

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Average daylight in September /
Average sunshine in September
Samão, Portugal

Average daylight in September / Average sunshine in September - Samão, Portugal
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.2h).

  • Average sunshine in September: 9h

The month with the most sunshine is July (Average sunshine: 11.1h).
The month with the least sunshine is January (Average sunshine: 4.3h).

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Average sunshine days in September
Samão, Portugal

Average sunshine days in September - Samão, Portugal
  • Average sunshine days in September: 23.2 days

The month with the most sunshine days is August (26.8 days).
The month with the least sunshine days is November (12.2 days).

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Average UV index in September
Samão, Portugal

Average UV index in September - Samão, Portugal
  • Average UV index in September: 5

Months with the highest UV index are July and August (UV index 6).
Months with the lowest UV index are January and February (UV index 2).

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Average cloud cover in September
Samão, Portugal

Average cloud cover in September - Samão, Portugal
  • Average cloud cover in September: 26

The month with the most cloud cover is January (Cloud cover 55).
Months with the least cloud cover are July and August (Cloud cover 22).

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Average visibility in September
Samão, Portugal

Average visibility in September - Samão, Portugal
  • Average visibility in September: 9km

Months with the highest visibility are July, August and September (9km).
Months with the lowest visibility are January, February, November and December (7km).

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